CVE-2026-15535

MEDIUMPre-NVD 6.36.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-07-13. A secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated
6.3EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.3Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

A vulnerability was determined in AkariAsai self-rag up to 1fcdc420e48f50a7d7ab1ece5494221b93252e99. Affected by this issue is the function Indexer.deserialize_from of the file retrieval_lm/src/index.py of the component retrieval_lm. Executing a manipulation of the argument index_meta.faiss can lead to deserialization. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity63% × 45%
The EG Score, 6.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.4%
EPSS %ILE
35th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 13, 2026

Last Modified

July 13, 2026

Advisory Details (3)

Auto-updated Jul 13, 2026
Fix referenced — no release confirmed yet. Sources: github_pr.
Web page

GitHub - AkariAsai/self-rag: This includes the original implementation of SELF-RAG: Learning to Retrieve, Generate and Critique through self-reflection by Akari Asai, Zeqiu Wu, Yizhong Wang, Avirup Sil, and Hannaneh Hajishirzi. · GitHub

https://github.com/AkariAsai/self-rag/
GitHub pull request

Avoid pickle for retriever index metadata

Upstream fix in progress (PR #106 · AkariAsai/self-rag, state=open)

https://github.com/AkariAsai/self-rag/pull/106
Web page

Arbitrary Code Execution via Unsafe Pickle Deserialization in Retriever Index Cache · Issue #105 · AkariAsai/self-rag · GitHub

https://github.com/AkariAsai/self-rag/issues/105

Vendor Advisories for CVE-2026-15535(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 181 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 81 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-10-12 16:31 UTCEG score recompute
  4. 2026-10-11 20:10 UTCEG score recompute
  5. 2026-10-11 17:22 UTCEG score recompute
  6. 2026-10-11 14:55 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-01 14:47 UTCEG score recompute
  18. 2026-10-01 14:47 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  19. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-09-28 09:38 UTCEG score recompute
  23. 2026-09-28 09:38 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  24. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  25. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 34th percentile
Show 75 more
  1. 2026-09-24 10:16 UTCEG score recompute
  2. 2026-09-24 10:16 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  3. 2026-09-23 05:36 UTCEG score recompute
  4. 2026-09-23 05:36 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  5. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  6. 2026-09-18 05:09 UTCEG score recompute
  7. 2026-09-18 05:09 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  8. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  9. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-09-14 07:02 UTCEG score recompute
  11. 2026-09-14 07:02 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  12. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-09-13 08:04 UTCEG score recompute
  14. 2026-09-13 08:04 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  15. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  16. 2026-09-12 01:58 UTCEG score recompute
  17. 2026-09-12 01:58 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  18. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  19. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  20. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  21. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  22. 2026-09-08 02:14 UTCEG score recompute
  23. 2026-09-08 02:14 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  24. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  25. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  26. 2026-09-05 21:31 UTCEG score recompute
  27. 2026-09-05 21:31 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  28. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  29. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  30. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  31. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  32. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  33. 2026-08-30 05:42 UTCEG score recompute
  34. 2026-08-30 05:42 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  35. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  36. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  37. 2026-08-28 02:37 UTCEG score recompute
  38. 2026-08-28 02:37 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  39. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  40. 2026-08-27 02:26 UTCEG score recompute
  41. 2026-08-27 02:26 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  42. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  43. 2026-08-26 03:29 UTCEG score recompute
  44. 2026-08-26 03:28 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  45. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  46. 2026-08-25 04:30 UTCEG score recompute
  47. 2026-08-25 04:30 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  48. 2026-08-24 05:33 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  49. 2026-08-23 06:37 UTCEG score recompute
  50. 2026-08-23 06:37 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  51. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  52. 2026-08-22 07:40 UTCEG score recompute
  53. 2026-08-22 07:40 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  54. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  55. 2026-08-21 08:43 UTCEG score recompute
  56. 2026-08-21 08:43 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  57. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  58. 2026-08-20 09:46 UTCEG score recompute
  59. 2026-08-20 09:46 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  60. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  61. 2026-08-19 10:49 UTCEG score recompute
  62. 2026-08-19 10:49 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  63. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  64. 2026-08-18 11:43 UTCEG score recompute
  65. 2026-08-18 11:43 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  66. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  67. 2026-08-17 12:47 UTCEG score recompute
  68. 2026-08-17 12:47 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  69. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  70. 2026-08-16 13:50 UTCEG score recompute
  71. 2026-08-16 13:50 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  72. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  73. 2026-08-15 14:53 UTCEG score recompute
  74. 2026-08-15 14:53 UTCGHSA enrichmentGHSA-xp65-m377-m42w · GitHub severity LOW · GitHub CVSS 6.3
  75. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 16th percentile

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Frequently asked(5)

What is CVE-2026-15535?
CVE-2026-15535 is a medium-severity vulnerability; its CVE record was published on July 13, 2026. A vulnerability was determined in AkariAsai self-rag up to 1fcdc420e48f50a7d7ab1ece5494221b93252e99. Affected by this issue is the function Indexer.deserializefrom of the file retrievallm/src/index.py of the component retrievallm. Executing a manipulation of the argument indexmeta.faiss can lead to…
When was the CVE record for CVE-2026-15535 published?
The CVE record for CVE-2026-15535 was published on July 13, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 13, 2026; the record at its source may have been updated since.
Is CVE-2026-15535 actively exploited?
CVE-2026-15535 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15535?
CVE-2026-15535 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15535?
A fix for CVE-2026-15535 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-15535 are linked in the Vendor Advisories panel on this page.

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